Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
  • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
  • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
  • G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
  • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
  • H03J1/02—Indicating arrangements
  • H03J1/04—Indicating arrangements with optical indicating means
  • H03J1/045—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like
  • H03J1/047—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's
  • H03J1/048—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's with digital indication
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K21/00—Details of pulse counters or frequency dividers
  • H03K21/38—Starting, stopping or resetting the counter
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
  • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
  • H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Circuits Of Receivers In General (AREA)
• Superheterodyne Receivers (AREA)
• Measuring Frequencies, Analyzing Spectra (AREA)
• Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
• Manipulation Of Pulses (AREA)
• Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=62567076

Family Applications (1)

Country Status (10)

Families Citing this family (8)

Family Cites Families (4)

• 1973
  • 1973-11-24 DE DE19732358673 patent/DE2358673B2/de not_active Ceased
• 1974
  • 1974-11-06 IT IT29175/74A patent/IT1025480B/it active
  • 1974-11-20 ES ES432116A patent/ES432116A1/es not_active Expired
  • 1974-11-20 GB GB50236/74A patent/GB1483654A/en not_active Expired
  • 1974-11-21 SE SE7414651A patent/SE397034B/xx unknown
  • 1974-11-21 US US05/526,052 patent/US3949307A/en not_active Expired - Lifetime
  • 1974-11-22 FR FR7438468A patent/FR2252699B1/fr not_active Expired
  • 1974-11-22 JP JP49135060A patent/JPS5086206A/ja active Pending
• 1975
  • 1975-09-16 DE DE2541201A patent/DE2541201C3/de not_active Expired
• 1980
  • 1980-01-10 HK HK10/80A patent/HK1080A/xx unknown
  • 1980-12-30 MY MY279/80A patent/MY8000279A/xx unknown

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